Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 447 insertions, 0 deletions

diff --git a/nsprpub/pr/tests/perf.c b/nsprpub/pr/tests/perf.c
new file mode 100644
index 0000000000..cd8ac1439b
--- /dev/null
+++ b/nsprpub/pr/tests/perf.c
@@ -0,0 +1,447 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nspr.h"
+#include "plgetopt.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int _debug_on = 0;
+#define DPRINTF(arg) if (_debug_on) printf arg
+
+#include "obsolete/prsem.h"
+
+PRLock *lock;
+PRMonitor *mon;
+PRMonitor *mon2;
+
+#define DEFAULT_COUNT    1000
+
+PRInt32 count;
+
+static void nop(int a, int b, int c)
+{
+}
+
+static void LocalProcedureCall(void)
+{
+    PRInt32 i;
+
+    for (i = 0; i < count; i++) {
+        nop(i, i, 5);
+    }
+}
+
+static void DLLProcedureCall(void)
+{
+    PRInt32 i;
+    PRThreadState state;
+    PRThread *self = PR_GetCurrentThread();
+
+    for (i = 0; i < count; i++) {
+        state = PR_GetThreadState(self);
+    }
+}
+
+static void Now(void)
+{
+    PRInt32 i;
+    PRTime time;
+
+    for (i = 0; i < count; i++) {
+        time = PR_Now();
+    }
+}
+
+static void Interval(void)
+{
+    PRInt32 i;
+    PRIntervalTime time;
+
+    for (i = 0; i < count; i++) {
+        time = PR_IntervalNow();
+    }
+}
+
+static void IdleLock(void)
+{
+    PRInt32 i;
+
+    for (i = 0; i < count; i++) {
+        PR_Lock(lock);
+        PR_Unlock(lock);
+    }
+}
+
+static void IdleMonitor(void)
+{
+    PRInt32 i;
+
+    for (i = 0; i < count; i++) {
+        PR_EnterMonitor(mon);
+        PR_ExitMonitor(mon);
+    }
+}
+
+static void IdleCMonitor(void)
+{
+    PRInt32 i;
+
+    for (i = 0; i < count; i++) {
+        PR_CEnterMonitor((void*)7);
+        PR_CExitMonitor((void*)7);
+    }
+}
+
+/************************************************************************/
+
+static void PR_CALLBACK dull(void *arg)
+{
+}
+
+static void CDThread(void)
+{
+    PRInt32 i;
+    int num_threads = count;
+
+    /*
+     * Cannot create too many threads
+     */
+    if (num_threads > 1000) {
+        num_threads = 1000;
+    }
+
+    for (i = 0; i < num_threads; i++) {
+        PRThread *t = PR_CreateThread(PR_USER_THREAD,
+                                      dull, 0,
+                                      PR_PRIORITY_NORMAL,
+                                      PR_LOCAL_THREAD,
+                                      PR_UNJOINABLE_THREAD,
+                                      0);
+        if (NULL == t) {
+            fprintf(stderr, "CDThread: cannot create thread %3d\n", i);
+        } else {
+            DPRINTF(("CDThread: created thread %3d \n",i));
+        }
+        PR_Sleep(0);
+    }
+}
+
+static int alive;
+static int cxq;
+
+static void PR_CALLBACK CXReader(void *arg)
+{
+    PRInt32 i, n;
+
+    PR_EnterMonitor(mon);
+    n = count / 2;
+    for (i = 0; i < n; i++) {
+        while (cxq == 0) {
+            DPRINTF(("CXReader: thread = 0x%lx waiting\n",
+                     PR_GetCurrentThread()));
+            PR_Wait(mon, PR_INTERVAL_NO_TIMEOUT);
+        }
+        --cxq;
+        PR_Notify(mon);
+    }
+    PR_ExitMonitor(mon);
+
+    PR_EnterMonitor(mon2);
+    --alive;
+    PR_Notify(mon2);
+    PR_ExitMonitor(mon2);
+    DPRINTF(("CXReader: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
+}
+
+static void PR_CALLBACK CXWriter(void *arg)
+{
+    PRInt32 i, n;
+
+    PR_EnterMonitor(mon);
+    n = count / 2;
+    for (i = 0; i < n; i++) {
+        while (cxq == 1) {
+            DPRINTF(("CXWriter: thread = 0x%lx waiting\n",
+                     PR_GetCurrentThread()));
+            PR_Wait(mon, PR_INTERVAL_NO_TIMEOUT);
+        }
+        ++cxq;
+        PR_Notify(mon);
+    }
+    PR_ExitMonitor(mon);
+
+    PR_EnterMonitor(mon2);
+    --alive;
+    PR_Notify(mon2);
+    PR_ExitMonitor(mon2);
+    DPRINTF(("CXWriter: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
+}
+
+static void ContextSwitch(PRThreadScope scope1, PRThreadScope scope2)
+{
+    PRThread *t1, *t2;
+
+    PR_EnterMonitor(mon2);
+    alive = 2;
+    cxq = 0;
+
+    t1 = PR_CreateThread(PR_USER_THREAD,
+                         CXReader, 0,
+                         PR_PRIORITY_NORMAL,
+                         scope1,
+                         PR_UNJOINABLE_THREAD,
+                         0);
+    if (NULL == t1) {
+        fprintf(stderr, "ContextSwitch: cannot create thread\n");
+    } else {
+        DPRINTF(("ContextSwitch: created %s thread = 0x%lx\n",
+                 (scope1 == PR_GLOBAL_THREAD ?
+                  "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
+                 t1));
+    }
+    t2 = PR_CreateThread(PR_USER_THREAD,
+                         CXWriter, 0,
+                         PR_PRIORITY_NORMAL,
+                         scope2,
+                         PR_UNJOINABLE_THREAD,
+                         0);
+    if (NULL == t2) {
+        fprintf(stderr, "ContextSwitch: cannot create thread\n");
+    } else {
+        DPRINTF(("ContextSwitch: created %s thread = 0x%lx\n",
+                 (scope2 == PR_GLOBAL_THREAD ?
+                  "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
+                 t2));
+    }
+
+    /* Wait for both of the threads to exit */
+    while (alive) {
+        PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
+    }
+    PR_ExitMonitor(mon2);
+}
+
+static void ContextSwitchUU(void)
+{
+    ContextSwitch(PR_LOCAL_THREAD, PR_LOCAL_THREAD);
+}
+
+static void ContextSwitchUK(void)
+{
+    ContextSwitch(PR_LOCAL_THREAD, PR_GLOBAL_THREAD);
+}
+
+static void ContextSwitchKU(void)
+{
+    ContextSwitch(PR_GLOBAL_THREAD, PR_LOCAL_THREAD);
+}
+
+static void ContextSwitchKK(void)
+{
+    ContextSwitch(PR_GLOBAL_THREAD, PR_GLOBAL_THREAD);
+}
+
+/************************************************************************/
+
+static void PR_CALLBACK SemaThread(void *argSema)
+{
+    PRSemaphore **sem = (PRSemaphore **)argSema;
+    PRInt32 i, n;
+
+    n = count / 2;
+    for (i = 0; i < n; i++) {
+        DPRINTF(("SemaThread: thread = 0x%lx waiting on sem = 0x%lx\n",
+                 PR_GetCurrentThread(), sem[0]));
+        PR_WaitSem(sem[0]);
+        DPRINTF(("SemaThread: thread = 0x%lx posting on sem = 0x%lx\n",
+                 PR_GetCurrentThread(), sem[1]));
+        PR_PostSem(sem[1]);
+    }
+
+    PR_EnterMonitor(mon2);
+    --alive;
+    PR_Notify(mon2);
+    PR_ExitMonitor(mon2);
+    DPRINTF(("SemaThread: thread = 0x%lx exiting\n", PR_GetCurrentThread()));
+}
+
+static  PRSemaphore *sem_set1[2];
+static  PRSemaphore *sem_set2[2];
+
+static void SemaContextSwitch(PRThreadScope scope1, PRThreadScope scope2)
+{
+    PRThread *t1, *t2;
+    sem_set1[0] = PR_NewSem(1);
+    sem_set1[1] = PR_NewSem(0);
+    sem_set2[0] = sem_set1[1];
+    sem_set2[1] = sem_set1[0];
+
+    PR_EnterMonitor(mon2);
+    alive = 2;
+    cxq = 0;
+
+    t1 = PR_CreateThread(PR_USER_THREAD,
+                         SemaThread,
+                         sem_set1,
+                         PR_PRIORITY_NORMAL,
+                         scope1,
+                         PR_UNJOINABLE_THREAD,
+                         0);
+    if (NULL == t1) {
+        fprintf(stderr, "SemaContextSwitch: cannot create thread\n");
+    } else {
+        DPRINTF(("SemaContextSwitch: created %s thread = 0x%lx\n",
+                 (scope1 == PR_GLOBAL_THREAD ?
+                  "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
+                 t1));
+    }
+    t2 = PR_CreateThread(PR_USER_THREAD,
+                         SemaThread,
+                         sem_set2,
+                         PR_PRIORITY_NORMAL,
+                         scope2,
+                         PR_UNJOINABLE_THREAD,
+                         0);
+    if (NULL == t2) {
+        fprintf(stderr, "SemaContextSwitch: cannot create thread\n");
+    } else {
+        DPRINTF(("SemaContextSwitch: created %s thread = 0x%lx\n",
+                 (scope2 == PR_GLOBAL_THREAD ?
+                  "PR_GLOBAL_THREAD" : "PR_LOCAL_THREAD"),
+                 t2));
+    }
+
+    /* Wait for both of the threads to exit */
+    while (alive) {
+        PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
+    }
+    PR_ExitMonitor(mon2);
+
+    PR_DestroySem(sem_set1[0]);
+    PR_DestroySem(sem_set1[1]);
+}
+
+static void SemaContextSwitchUU(void)
+{
+    SemaContextSwitch(PR_LOCAL_THREAD, PR_LOCAL_THREAD);
+}
+
+static void SemaContextSwitchUK(void)
+{
+    SemaContextSwitch(PR_LOCAL_THREAD, PR_GLOBAL_THREAD);
+}
+
+static void SemaContextSwitchKU(void)
+{
+    SemaContextSwitch(PR_GLOBAL_THREAD, PR_LOCAL_THREAD);
+}
+
+static void SemaContextSwitchKK(void)
+{
+    SemaContextSwitch(PR_GLOBAL_THREAD, PR_GLOBAL_THREAD);
+}
+
+
+/************************************************************************/
+
+static void Measure(void (*func)(void), const char *msg)
+{
+    PRIntervalTime start, stop;
+    double d;
+
+    start = PR_IntervalNow();
+    (*func)();
+    stop = PR_IntervalNow() - start;
+    d = (double)PR_IntervalToMicroseconds(stop);
+
+    printf("%40s: %6.2f usec\n", msg, d / count);
+}
+
+int main(int argc, char **argv)
+{
+    PLOptStatus os;
+    PLOptState *opt = PL_CreateOptState(argc, argv, "dc:");
+    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
+    {
+        if (PL_OPT_BAD == os) {
+            continue;
+        }
+        switch (opt->option)
+        {
+            case 'd':  /* debug mode */
+                _debug_on = 1;
+                break;
+            case 'c':  /* loop count */
+                count = atoi(opt->value);
+                break;
+            default:
+                break;
+        }
+    }
+    PL_DestroyOptState(opt);
+
+    if (0 == count) {
+        count = DEFAULT_COUNT;
+    }
+
+    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
+    PR_BlockClockInterrupts();
+    PR_UnblockClockInterrupts();
+    PR_STDIO_INIT();
+
+    lock = PR_NewLock();
+    mon = PR_NewMonitor();
+    mon2 = PR_NewMonitor();
+
+    Measure(LocalProcedureCall, "local procedure call overhead");
+    Measure(DLLProcedureCall, "DLL procedure call overhead");
+    Measure(Now, "current calendar time");
+    Measure(Interval, "interval time");
+    Measure(IdleLock, "idle lock lock/unlock pair");
+    Measure(IdleMonitor, "idle monitor entry/exit pair");
+    Measure(IdleCMonitor, "idle cache monitor entry/exit pair");
+    Measure(CDThread, "create/destroy thread pair");
+    Measure(ContextSwitchUU, "context switch - user/user");
+    Measure(ContextSwitchUK, "context switch - user/kernel");
+    Measure(ContextSwitchKU, "context switch - kernel/user");
+    Measure(ContextSwitchKK, "context switch - kernel/kernel");
+    Measure(SemaContextSwitchUU, "sema context switch - user/user");
+    Measure(SemaContextSwitchUK, "sema context switch - user/kernel");
+    Measure(SemaContextSwitchKU, "sema context switch - kernel/user");
+    Measure(SemaContextSwitchKK, "sema context switch - kernel/kernel");
+
+    printf("--------------\n");
+    printf("Adding 7 additional CPUs\n");
+
+    PR_SetConcurrency(8);
+    printf("--------------\n");
+
+    Measure(LocalProcedureCall, "local procedure call overhead");
+    Measure(DLLProcedureCall, "DLL procedure call overhead");
+    Measure(Now, "current calendar time");
+    Measure(Interval, "interval time");
+    Measure(IdleLock, "idle lock lock/unlock pair");
+    Measure(IdleMonitor, "idle monitor entry/exit pair");
+    Measure(IdleCMonitor, "idle cache monitor entry/exit pair");
+    Measure(CDThread, "create/destroy thread pair");
+    Measure(ContextSwitchUU, "context switch - user/user");
+    Measure(ContextSwitchUK, "context switch - user/kernel");
+    Measure(ContextSwitchKU, "context switch - kernel/user");
+    Measure(ContextSwitchKK, "context switch - kernel/kernel");
+    Measure(SemaContextSwitchUU, "sema context switch - user/user");
+    Measure(SemaContextSwitchUK, "sema context switch - user/kernel");
+    Measure(SemaContextSwitchKU, "sema context switch - kernel/user");
+    Measure(SemaContextSwitchKK, "sema context switch - kernel/kernel");
+
+    PR_DestroyLock(lock);
+    PR_DestroyMonitor(mon);
+    PR_DestroyMonitor(mon2);
+
+    PR_Cleanup();
+    return 0;
+}